DOE: Information on Power Grid Threats Should Have Been Classified

DOE Calls on Regulators to Change Handling of Information

The Energy Department's inspector general said on Wednesday that information about the U.S. electric grid's vulnerability to physical attacks should have been classified for national security reasons, and called on federal regulators to change the way they handle such material.

As The Wall Street Journal reported earlier this year, the Federal Energy Regulatory Commission briefed many utility executives, congressional leaders, trade groups and government officials about an attack by gunmen on an electrical substation in...